DEF [
dɛf]
[计] 数据输入设施, 定义
[医] 乳牙龋数(率)(d=需补牙数,e=需拔牙数,f=已拔牙数)
- In warm weather& def people enjoy water sports.
天热时,他们喜欢水上运动。 - From the first snowfall& def skiers hit the slopes.
从下雪的头一天起,滑雪者便登上雪坡。 - Fishermen try their luck in ponds& def lakes and rivers.
渔夫在池塘、泊和河川里试他们的运气。